Air Bag Control Module: Service and Repair

2005 Chevrolet Optra (CANADA) L4-2.0LSECTION Service and Repair



Airbag Sensing and Diagnostic Module Replacement (2.0L)

Removal Procedure





Caution:
Refer to Sensing and Diagnostic Module Handling Caution Sensing and Diagnostic Module Handling Caution in Cautions and Notices.

Caution:
Refer to SIR Caution SIR Caution in Cautions and Notices.

Important:
If the vehicle interior has been exposed to extensive water intrusion such as water leaks, driving through high water, flooding, or other causes, then the sensing and diagnostic module (SDM) and SDM connector may need to be replaced. With the ignition OFF, inspect the area of SDM, including the carpet. If any significant soaking or evidence of previous soaking is detected, the water must be removed, the water damage repaired, and the SDM and SDM connector must be replaced. Before attempting any of these repairs, the SIR must be disabled. Refer to Disabling the SIR System Service and Repair.


1. Disable the supplemental inflatable restraints (SIR). Refer to Disabling the SIR System Service and Repair

2. Remove the floor console. Refer to Front Floor Console Replacement Service and Repair in Interior Trim.

3. Remove the connector position assurance lock, which is tethered to the SDM connector.

4. Disconnect the SDM electrical connector.

5. Remove the SDM mounting bolts.

6. Remove the SDM.

Installation Procedure

Caution:
Refer to SIR Special Tool Caution SIR Special Tool Caution in Cautions and Notices.

CAUTION:
Be careful when you handle a sensing and diagnostic module (SDM). Do not strike or jolt the SDM. Before applying power to the SDM:

* Remove any dirt, grease, etc. from the mounting surface

* Position the SDM horizontally on the mounting surface

* Point the arrow on the SDM toward the front of the vehicle

* Tighten all of the SDM fasteners and SDM bracket fasteners to the specified torque value

Failure to follow the correct procedure could cause air bag deployment, personal injury, or unnecessary SRS system repairs.

1. Install the SDM with the arrow pointing toward the front of the vehicle.





Notice:
Refer to Fastener Notice Fastener Notice in Cautions and Notices.

2. Install the SDM mounting bolts.

Tighten the SDM mounting bolts to 10 Nm (89 lb in).

3. Connect the SDM electrical connector.

4. Install the connector position assurance lock.

5. Install the floor console. Refer to Front Floor Console Replacement Service and Repair in Interior Trim.

6. Enable the SIR. Refer to Enabling the SIR System Service and Repair.

RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.